A sensitive and practical method to detect the T790M mutation in the epidermal growth factor receptor

  • Authors:
    • Jing Zhao
    • Hua‑Hua Feng
    • Jin‑Yin Zhao
    • Li‑Cheng Liu
    • Fei‑Fei Xie
    • Yan Xu
    • Min‑Jiang Chen
    • Wei Zhong
    • Long‑Yun Li
    • Han‑Ping Wang
    • Li Zhang
    • Yi Xiao
    • Wei‑Jun Chen
    • Meng‑Zhao Wang
  • View Affiliations

  • Published online on: February 23, 2016     https://doi.org/10.3892/ol.2016.4263
  • Pages: 2573-2579
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Abstract

The current study aimed to develop a method to rapidly, sensitively and practically screen for the epidermal growth factor receptor (EGFR) T790M mutation. This method combines an allele-specific competitive blocker (ACB) with a TaqMan quantitative polymerase chain reaction (PCR) amplification refractory mutation system (ARMS) in a one-step reaction. Using a mimic of a human genomic DNA panel containing serially diluted mutant alleles, the performance efficacy of this method was assessed. Using this method, the EGFR T790M mutation was detected in tyrosine kinase inhibitor (TKI)-naïve samples obtained from 27 non‑small cell lung cancer (NSCLC) patients with EGFR‑activating mutations. The association between de novo T790M mutations and the clinical benefit of EGFR-TKI treatment was also analysed. The sensitivity of this method was as low as 0.01%. In the samples from the 27 NSCLC patients, this method identified 6 mutant patients (22.2%), which was higher than the detection rate with scorpion ARMS (0.0%). No clinical variables were associated with the occurrence of a de novo T790M mutation. The median progression‑free survival time in the TKI‑naïve patients with a T790M mutation was shorter that that of patients without the mutation, but the difference was not significant (3.2 vs. 19.5 months, respectively; P=0.256). The median overall survival time in the groups with or without T790M mutation also did not significantly differ (10 vs. 20 months, respectively; P=0.689). Overall, the ACB‑ARMS PCR method could be useful for detecting the EGFR T790M mutation in clinical samples that contain only a small number of mutant alleles. The clinical significance of a de novo T790M mutation should be further investigated.
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April-2016
Volume 11 Issue 4

Print ISSN: 1792-1074
Online ISSN:1792-1082

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Spandidos Publications style
Zhao J, Feng HH, Zhao JY, Liu LC, Xie FF, Xu Y, Chen MJ, Zhong W, Li LY, Wang HP, Wang HP, et al: A sensitive and practical method to detect the T790M mutation in the epidermal growth factor receptor. Oncol Lett 11: 2573-2579, 2016
APA
Zhao, J., Feng, H., Zhao, J., Liu, L., Xie, F., Xu, Y. ... Wang, M. (2016). A sensitive and practical method to detect the T790M mutation in the epidermal growth factor receptor. Oncology Letters, 11, 2573-2579. https://doi.org/10.3892/ol.2016.4263
MLA
Zhao, J., Feng, H., Zhao, J., Liu, L., Xie, F., Xu, Y., Chen, M., Zhong, W., Li, L., Wang, H., Zhang, L., Xiao, Y., Chen, W., Wang, M."A sensitive and practical method to detect the T790M mutation in the epidermal growth factor receptor". Oncology Letters 11.4 (2016): 2573-2579.
Chicago
Zhao, J., Feng, H., Zhao, J., Liu, L., Xie, F., Xu, Y., Chen, M., Zhong, W., Li, L., Wang, H., Zhang, L., Xiao, Y., Chen, W., Wang, M."A sensitive and practical method to detect the T790M mutation in the epidermal growth factor receptor". Oncology Letters 11, no. 4 (2016): 2573-2579. https://doi.org/10.3892/ol.2016.4263